A Coupled EBSD/EDS Method to Determine the Primary- and Secondary-Alpha Textures in Titanium Alloys With Duplex Microstructures (Preprint)

Abstract

A method for separating the textures of primary alpha and secondary alpha in alpha/beta titanium alloys with a duplex microstructure was developed. Utilizing electron backscatter diffraction (EBSD) and energy-dispersive spectroscopy (EDS), the approach relies on the non-uniform partitioning of alloying elements between primary alpha and regions containing secondary-alpha lamellae and residual beta matrix phase. The method was evaluated using samples of Ti-6Al-4V for which vanadium partitions strongly to secondary alpha + beta regions. The technique thus provides a useful tool for quantifying the evolution of deformation texture in the primary alpha and transformation texture in secondary alpha formed via decomposition of the beta matrix following hot working or final heat treatment.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2007
Accession Number
ADA489602

Entities

People

  • A. A. Salem
  • M. G. Glavicic
  • S. L. Semiatin

Organizations

  • Universal Energy Systems

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Alloys
  • Crystal Structure
  • Decomposition
  • Diffraction
  • Electron Microscopes
  • Elements
  • Heat Treatment
  • Hot Working
  • Materials
  • Materials Science
  • Metals
  • Microscopes
  • Scanning Electron Microscopes
  • Titanium
  • Titanium Alloys

Readers

  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics